/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

#include <thrift/concurrency/ThreadManager.h>
#include <thrift/concurrency/ThreadFactory.h>
#include <thrift/protocol/TBinaryProtocol.h>
#include <thrift/server/TSimpleServer.h>
#include <thrift/server/TThreadPoolServer.h>
#include <thrift/server/TThreadedServer.h>
#include <thrift/transport/TServerSocket.h>
#include <thrift/transport/TSSLServerSocket.h>
#include <thrift/transport/TTransportUtils.h>
#include <thrift/TToString.h>

#include <iostream>
#include <stdexcept>
#include <sstream>

#include "gen-cpp/Calculator.h"

using namespace std;
using namespace apache::thrift;
using namespace apache::thrift::concurrency;
using namespace apache::thrift::protocol;
using namespace apache::thrift::transport;
using namespace apache::thrift::server;

using namespace tutorial;
using namespace shared;

class CalculatorHandler : public CalculatorIf {
public:
  CalculatorHandler() {}

  void ping() { cout << "ping()" << endl; }

  int32_t add(const int32_t n1, const int32_t n2) {
    cout << "add(" << n1 << ", " << n2 << ")" << endl;
    return n1 + n2;
  }

  int32_t calculate(const int32_t logid, const Work& work) {
    cout << "calculate(" << logid << ", " << work << ")" << endl;
    int32_t val;
	
    switch (work.op) {
    case Operation::ADD:
      val = work.num1 + work.num2;
      break;
    case Operation::SUBTRACT:
      val = work.num1 - work.num2;
      break;
    case Operation::MULTIPLY:
      val = work.num1 * work.num2;
      break;
    case Operation::DIVIDE:
      if (work.num2 == 0) {
        InvalidOperation io;
        io.what = work.op;
        io.why = "Cannot divide by 0";
        throw io;
      }
      val = work.num1 / work.num2;
      break;
    default:
      InvalidOperation io;
      io.what = work.op;
      io.why = "Invalid Operation";
      throw io;
    }

    SharedStruct ss;
    ss.key = logid;
    ss.value = to_string(val);

    log[logid] = ss;

    return val;
  }

  void getStruct(SharedStruct& ret, const int32_t logid)
  {
    cout << "getStruct(" << logid << ")" << endl;
    ret = log[logid];
  }

  void zip() { cout << "zip()" << endl; }

protected:
  map<int32_t, SharedStruct> log;
};


int main()
{

  try {
    boost::shared_ptr<TSSLContext>ctx_(new TSSLContext(TSSLContext::TLSv1));
    // Set up the SSL context
    ctx_->loadCertificate("tests-cert.pem");
    ctx_->loadPrivateKey("tests-key.pem");
    ctx_->ciphers("ALL:!ADH:!LOW:!EXP:!MD5:@STRENGTH");

    boost::shared_ptr<TProtocolFactory> protocolFactory(new TBinaryProtocolFactory());
    boost::shared_ptr<CalculatorHandler> handler(new CalculatorHandler());
    boost::shared_ptr<TProcessor> processor(new CalculatorProcessor(handler));
    boost::shared_ptr<TSSLSocketFactory> sslfactory(new TSSLSocketFactory(ctx_));
   
    boost::shared_ptr<TServerTransport> serverTransport(new TSSLServerSocket(9090, sslfactory));
    boost::shared_ptr<TTransportFactory> transportFactory(new TBufferedTransportFactory());

    TSimpleServer server(processor, serverTransport, transportFactory, protocolFactory);

    /**
     * Or you could do one of these

     const int workerCount = 4;

     boost::shared_ptr<ThreadManager> threadManager =
     ThreadManager::newSimpleThreadManager(workerCount);
     boost::shared_ptr<PosixThreadFactory> threadFactory =
     boost::shared_ptr<PosixThreadFactory>(new PosixThreadFactory());
     threadManager->threadFactory(threadFactory);
     threadManager->start();
     TThreadPoolServer server(processor,
     serverTransport,
     transportFactory,
     protocolFactory,
     threadManager);

     TThreadedServer server(processor,
     serverTransport,
     transportFactory,
     protocolFactory);

     */

    cout << "Starting the server..." << endl;
    server.serve();
    cout << "Done." << endl;
  }
  catch (TException& e){
    cout << e.what();
  }
  return 0;
}
